"The Court's conclusion ultimately rests upon a single ground: Congress has not issued the Executive a 'blank check,' Breyer wrote. "Indeed, Congress has denied the president the legislative authority to create military commissions of the kind at issue here. Nothing prevents the president from returning to Congress to seek the authority he believes necessary."

Or, as Monty Python put it, "Supreme executive power comes from a mandate from the masses, not some farcical aquatic ceremony."

 It's about damn time.   Worth noting: Alito, J., dissenting.  Thank you Senator Lieberman.